X-ray apparatus



Feb. 16, 1960 Filed Feb. 4, 1958 X-RAY APPARATUS' 5 Sheets-Sheet 1 &'-IIIIIIIIIIIIIIIIIIIIIIIIlllllllll Feb. 16, 1960 J. SEIDEL 2,925,499

X-RAY APPARATUS Filed Feb. 4, 1958 y 3 Sheets-Sheet 2 Feb. 41.6, 1960 J, SE'IDEL 2,925,499

x-RAY APPARATUS Filed Feb. 4, 195s l a sheets-sheet s' y" I I.. "All y vgl/#MAW A s, ,5,925,1519" YStains( APPARATUS JohannesS'eid'el, ReingerfWerke Aktiengesellschaft', Erlangen, `Germany Application Fem-nary 4, 1955s, Serial Nn. 713,207 clii ms priiit'y'; pplinfi'nn any` l'rlirn"nl ry Y 7, 1957 s claiins. (crass-4o) This 'intenties relates isfxiy fsispisiiisggsnii specifically toafn'X-ray apparatus having a higlivoltage riayrftribeL are laccoiirnt'xiat'edf i s (singleltk X-ray apparatus) 'and s generator 'and-ail in a conlmn'hou Vwhich are, lif"'necessary', ysepa'rated from eacl'rother1 a partition wall. yBei'ngo'funitary struetreg'tlie wl'ole vapparatus rnust Vbe rioved' in order: to focus lthe tube to an lject: For` this "resbii,sing1etank Xs-:ray apparatus have previously only been built ii the socalled half-wave 'retictionfprinciple in 'wllich the X-niy 'tubes' 'themselves sect-ille, rectification of the high-voltagealternatiig 'correntii re'tiiier.' and. asso-` L t v s ciated l'rezsitirig-'ci'l'rrent` transf.rrnersA ca ny'accordingly b e l The reduction w'ei voltageV 'reetilsvin tannini-isis by iis n ssiif iiigii# with rectifier-' sets'withlnrf range of :practical possibility, .It is; :therefore the i biffcltf f the, prestar-inenten fe. retide Single tlsXrrayf-srpssfu's Whiih i,.S f compact construction and has the necessary" strength. s

mOilPfOeQtve housing agrr'lmdafig. saidhish lf generator aridvsaidX-ray t e; the'high-voltag tor incorporating rod-shaped containers, rectiti s y built up. in' Said .rodrhaped lcoaltne'rs'i, a nl'l'lrality ,f said containers electrically yserially.connected forming IEQSPCGfiVeIY ccntanetgrsuis; the place of hot valves', .and a' structural element (high: voltage transformer coil, X-ray tube) of circular cross section, theA rod-.shaped containers of..sa id.` container groups being distributed `circlnnferentiallyv of said structural element with their longitudinal axes extending parallel to the'longitudinal axis of said'structural element and being electrically connected the with. :I In the arrangement eer'dingt `tlifel invent elements ccomfncotiatedii the" pr' spatially so disposed that only slight diierences in potential occur in operation between neighboring points thereof and very short connecting wires are necessary for the points to be connected. n

Two examples vof embodiments vof the inventiony will now'be described withreference to the accompanying drawings in which Fig. 1 is a cross sectional view of a' ksingle tanlc X-ray.

apparatus;

l Fig. 2 shows `a circuit diagramof the apparatus; Y s Fig. 3 illustrates a single tank VX-ray apparatus ofr modiiied construction in a longitudinal section; Y

Fig. 4 isa transverse cross section along line IV--IV of Fig. 3; A Fig. 5 shows a circuit diagram in accordance with Figs. 3 and 4;

Fig. 6 is a perspective view of a single tank X-ray apparatus incorporating the features of the inventionfor the apparatus madeA i, l; Samel not .t 2,925,499 16s les@ vand"sholvi :particularly the lfavorable spatial Aarrangenientof*partsthereof;andI f; i u v t l, Fig'. 7 is 'a sideview-of Figk'6, with the tank partly .broken` awayl to show the interior disposition of parts.

- 'gl'flie `structure ...illustrated in Figs'. 1 and ,2- comprises tliescfoils and Slaind intrconnectedwiththe other Y voltage, transformer 31' and a"heating-current;transformer 72, .fC-r 'as X-,ray lube 34;;fttsdin en insulating rub@ 3.3, -a'r' arranged. in the levier. ,n.Qrtitm of a ,i'rqtetve Yholising 30. The insulating 'tube 33` isVv provided, with fan apertureformed therein .andulthe'l protective housing 30 is'` providedwith `a window V52H to'allow the-,Passage s y ,L rinitsto dispose y ch 'arry operation the en a y ,l y, sothat leads of parts t6 beconnectd can belep'ttass'hortsaspossible. These leads, accordingly need y:not l'p'as's points. carrying a poten'- tial differing;considerablyfroin the potential, ot the leads, irliislw.rlildlitesitilt` elf-,ery bulky w' tictio wris tained. f

Figs. v.6 and `7 vshow aj'housing lmade, of, st el-tubing 61 cross-sectionally,substantially/ in the, form of thenuf meral `8 and` closed vat both ends by covers :62and6r3 welded thereinto. Thecore 65 of a l'ligh-voltagev transformer is mounted with Vone' ofits endsA on thesinsideA of the cover 62A by means of a supporting vs'trap64,p an'd is provided at its kopposite end, withtsa pin 66 engaging in a central',.bore formed `in thewall of .a pot 67. iittedv in the .sever 6s. An insulated primary coil isis slipped tinto'the,V core65 and upon the coil 68 ,are arranged 't Y' .bydsfidetwosecondarycoils 71 andh72 enclosed vin, insu tin'g wrappings 69 and 70. .LlfshapedVshort-circuit plates` 73ar`e then fitted in. ray-shape p11 the central core oveigthscoils 71 and '7.2'I cylindricaltransformer geglhs buillllp suisse tubular"rstiersggfe: gate 74 which is slipped Jthereon and which is constructed in the following manner.

A paper tube 76` xed uniformly distributed peripherally ofra thin insulating tube 75, contains rectifier rods j 77 connected in series and is bent in meander fashion at s the points where the rectilierrods 77 join. This assembly compact high-voltage unit.

is'thereupon wrapped with paper strips 78 and thus forms Vthe self-contained tubular rectifier aggregate 74 which is assembled with the high-voltage transformer to form a The rectifier chain is in the mannerillustrated in Fig. 2 electrically connected` with the secondary coils 71 and 72 and with anX-ray tube- 79 disposed above the khigh-voltage unit. The thickly wrapped connecting wires are designated in Figs. 6 and s 7l by numerals 80,81, 82, 83. The X-ray tube 79 is cemented at the cathode end in a socket 84 to which are connected the connecting wire for the high-voltage and also wrapped output wires 85 of a heating current transformer 86, the transformer being held on the cover 62 by a retainer plate 87. The socket 84 is bolted to an extension 89 of the cover 63 by means of an extension 88, an oil-tight joint being obtained by means of clips 90. The anode end of the tube 79 tits loosely in 'an annular stator 92 of a rotary anode motor and is resiliently pressed against al socket 93 Vengaged by the connecting wire 82.

T he housing has a ray outlet aperture which is closed by a cap 94 of synthetic material positioned close to the X-ray tube 79 and thus leaving only a small volume of oil between it and the wall of the tube. A funnel-shaped extension 95 on the ray outlet aperture serves for fitting a ray diaphragm' or the like. The heat expansion of the insulating oil is assured by a bellows 96, disposed in the previously mentioned pot 67 provided with several bores, to be pressed oil-tight against a ange 67a of the pot 67 which is closed by a protective cover 97. Current a ,y 2. X-ray apparatus is set forth in` claim 1, wherein said rod-shaped containers are arranged on an insulating lead wires98 and 99 for the primary coils of the'hightension transformer and the heating current transformer A other connection between two parts 88a and 88b of the holding element 88 becoming accessible after the removal of a plug 108 and such connection can thenV also ybe loosened. The wires 80 and 85 can thereupon be disconnected and the tube 79 removed from the socket, 93 and the stator 92. Should it be necessary, after assembling the apparatus, to again open the housing, the

welded seam on the edges of the steel tube 61 and the covers 62 `and 63 can be ground off. The anges of the covers 62 and 63 are made sufficiently long so that they can again be welded in position.

` Changes and modifications may be made within' the scope and spirit of the appended claims which define what is believed to be new and desired to have protected by Letters Patent.

I claim:

1. X-ray apparatus comprising a high-voltage generator having a high voltage transformer structure, an X-ray tube structure, a common protective housing accommodating said high-voltage generator and said X-ray tube structure, said high-voltage generator incorporating rod-shaped containers, rectifier tablets built up in' said rod-shaped containers, a plurality of said containers being electrically connected in series and forming container groups functionally eiective in the manner of hot valves, and an insulating structural element of tubular cross section in which at least a portion of one of said structures is disposed, said rod-shaped containers of each container group being distributed about said structural element circumferentially thereof and closely spaced therefrom and with their longitudinal axes extending parallel to the longitudinal axis of Such structural element.

tube constituting said stuctural element and surrounding the X-ray tube structure.

3. X-ray apparatus as set forth in claim 1, wherein said rod-shaped containers are disposed on an insulating tube constituting said structural element and surrounding the X-ray tube structure, and tubular high-voltage capacitors also disposed on said insulating tube.

4. X-ray apparatus as set forth in claim l, wherein said rod-shaped containers which are electrically connected in series are surrounded by an insulating tube folded in meander fashion at the electric connection points between the containers.

5. X-ray apparatus comprising a common housing which encloses an X-ray tube and also a high-voltage transformer including a primary coil and two secondary `icoils disposed side by lside on saidl primary coil inV gener- 6. X-ray apparatusvaccordin'g to claim 5,comprising' an insulating tube surrounding said secondary coils for supporting said rod-shaped containers.

l .7. `X-ray apparatus according tok claim 5, comprising an kinsulating tube surrounding said containers, said insulating' tube being folded in meander fashion at the electrical connection points between said containers. a

f 8, X-ray apparatus 'comprisinga highvoltage generator, an X-ray tube, a common protective housing accommodating said high voltage generator vand said X-ray tube, said high voltage generator incorporating a cylindrical Vtransformer and rod-shaped containers,` rectifier tablets 4built up in said rod-shaped containers, a plurality of said containers being electrically connected in series and forming container groups functionally effective in the manner of hot valves, and a structural element of circular cross section comprising an insulating tube, said rod-shaped containers of each container group being dis- ,tributed about said` structural element circumferentially thereof and closely spaced therefrom and Vwith their longitudinal axes extending parallel to the longitudinal axis of said structural element, .the latter being slipped onto Vsaid transformer and forming a high voltage unit therewith.

References Cited in the le of this patent UNITED STATES PATENTS Boucher Mar.. 26, 1957 

